Waterproof shading adhesive tape

Abstract

The utility model discloses a waterproof shading adhesive tape, and relates to the technical field of adhesive tapes, the waterproof shading adhesive tape is respectively provided with a light blocking layer, a waterproof layer, a self-repairing adhesive layer and a release protective layer from bottom to top, the light blocking layer is formed by compounding a base layer film and a high-reflection film, and micro bulges which are regularly arranged are distributed on the surface of the high-reflection film; the waterproof layer comprises a foaming material layer, micropores are densely formed in the foaming material layer, hydrophobic particles are evenly distributed in the micropores, and a breathable waterproof barrier is formed. According to the waterproof shading adhesive tape, the shading performance is enhanced through the synergistic effect of light path reflection and scattering due to the micro-bulge and wave interface design of the light blocking layer, a single reflection mechanism of a traditional metal foil is replaced, a gradient porous and hydrophobic particle structure of the waterproof transition layer is adopted, liquid water permeation is blocked while ventilation is achieved, and a radial groove and honeycomb hole structure of the self-repairing adhesive layer is adopted; and the deformation adaptability and the repair efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of adhesive tape technology, specifically a waterproof and light-blocking adhesive tape. Background Technology

[0002] In numerous industrial and daily applications, adhesive tape plays a vital role as a convenient material for fixing, sealing, and protecting. However, traditional adhesive tapes have significant limitations in specific applications, particularly in terms of waterproofing and light-blocking properties. Traditional adhesive tapes are typically made of paper or plastic substrates, and their adhesives are often acrylic or silicone. While these tapes can meet basic bonding needs in ordinary environments, they have significant shortcomings in the following two aspects:

[0003] Not waterproof: Traditional tapes tend to lose their adhesive properties when exposed to moisture, causing the tape to peel off and failing to effectively prevent water penetration. This is especially critical in outdoor environments, humid conditions, or situations requiring waterproofing, such as building waterproofing, electrical insulation, and automotive parts protection. Moisture penetration not only affects the tape's performance but can also damage the adhered object.

[0004] Inadequate light blocking: In situations requiring light blocking, such as for LCD displays or photographic equipment, traditional tape lacks an effective light-blocking layer and cannot achieve the desired effect. This not only affects the product's appearance and performance but may also lead to unnecessary light leakage, impacting the user experience. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a waterproof and light-blocking tape that solves the problem of poor waterproof and light-blocking performance of traditional tapes.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a waterproof and light-blocking tape, comprising, from bottom to top, a light-blocking layer, a waterproof layer, a self-healing adhesive layer, and a release protective layer, wherein:

[0007] The light-blocking layer is composed of a base film and a high-reflectivity film, and the surface of the high-reflectivity film has regularly arranged micro-protrusions.

[0008] The waterproof layer includes a foam material layer, on which micropores are densely distributed, and hydrophobic particles are evenly distributed within the micropores to form a breathable and waterproof barrier.

[0009] The self-healing adhesive layer is composed of a high-viscosity colloid and an elastic colloid, and an interpenetrating network structure is provided at the interface of the two colloid layers.

[0010] The release protective layer covers the self-healing adhesive layer, and the surface of the release protective layer is coated with an antistatic coating.

[0011] Preferably, the micro-protrusions are either hemispherical or pyramidal in shape, with a height of 10-50 μm, and the spacing between adjacent micro-protrusions is 1.5-3 times the height of the micro-protrusions. A wavy interface is formed between the base film and the high-reflectivity film, with a wave undulation depth of 5-20 μm.

[0012] Preferably, the micropores have a porosity of 30%-50%, a pore size of 5-20 μm, and a gradient distribution of pores. The pore size near the light-blocking layer is larger than that near the self-healing adhesive layer. The hydrophobic particles fill 15%-30% of the micropore volume and have a particle size of 1-10 μm.

[0013] Preferably, the thickness of the high-viscosity colloid is 0.1-0.3 mm, and the surface is provided with a radial groove structure. The groove depth is 20%-40% of the colloid thickness. The elastic colloid has a honeycomb porous structure with a pore wall thickness of 10-30 μm and a pore diameter of 50-200 μm.

[0014] Preferably, the antistatic coating is composed of conductive carbon fiber and polymer matrix, with the carbon fiber having a length of 0.5-2mm and a mass ratio of 3%-8%. The release liner has an uncoated area with a width of 1-3mm at its edge to assist in peeling.

[0015] Preferably, the light-blocking layer and the waterproof layer are connected by a sawtooth-shaped boundary interlocking connection, with an interlocking depth of 10%-15% of the total thickness, and the contact surface between the self-healing adhesive layer and the waterproof layer has any one of a wavy or grid-shaped uneven structure.

[0016] This utility model provides a waterproof and light-blocking tape, which has the following advantages compared with the prior art:

[0017] 1. This waterproof and light-blocking tape features a micro-protrusion and wave-like interface design in the light-blocking layer. It enhances light-blocking performance through the synergistic effect of light reflection and scattering, replacing the single reflection mechanism of traditional metal foil. The gradient porous structure and hydrophobic particles in the waterproof transition layer allow for air permeability while blocking liquid water penetration. The radial grooves and honeycomb structure of the self-healing adhesive layer improve deformation adaptability and repair efficiency.

[0018] 2. This waterproof and light-blocking tape features a serrated interlocking structure between the light-blocking layer and the waterproof layer to prevent interlayer peeling. The wavy / mesh contact surface between the adhesive layer and the waterproof layer increases the bonding area, preventing moisture intrusion.

[0019] 3. This waterproof and light-blocking tape features an uncoated release layer edge design that allows for easy peeling without damaging the adhesive. The anti-static coating eliminates dust adsorption during the application process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the light-blocking layer of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the waterproof layer of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the self-healing adhesive layer of this utility model.

[0024] In the diagram: 1. Light-blocking layer; 11. Base film; 12. High-reflective film; 13. Micro-protrusions; 2. Waterproof layer; 21. Foaming material layer; 22. Micropores; 23. Hydrophobic particles; 3. Self-healing adhesive layer; 31. High-viscosity colloid; 32. Elastic colloid; 4. Release protective layer. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-4 This utility model provides a technical solution:

[0027] Please see Figure 1 In this embodiment of the utility model, a waterproof and light-blocking tape is provided from bottom to top with a light-blocking layer 1, a waterproof layer 2, a self-healing adhesive layer 3, and a release protective layer 4, wherein:

[0028] Please see Figure 2 In this embodiment of the present invention, the light blocking layer 1 is composed of a base film 11 and a high reflectivity film 12, and the surface of the high reflectivity film 12 is distributed with regularly arranged micro-protrusions 13.

[0029] Please see Figure 3 In this embodiment of the present invention, the waterproof layer 2 includes a foamed material layer 21, on which micropores 22 are densely distributed, and hydrophobic particles 23 are uniformly distributed in the micropores 22 to form a breathable and waterproof barrier.

[0030] Please see Figure 4 In this embodiment of the present invention, the self-healing adhesive layer 3 is composed of a high-viscosity colloid 31 and an elastic colloid 32. An interpenetrating network structure is provided at the interface of the two colloids. The upper high-viscosity colloid 31 and the lower elastic colloid 32 form a "root-like" interpenetrating network at the interface. The two materials extend and intertwine with each other without a clear dividing line.

[0031] Please see Figure 1 In this embodiment of the present invention, the release protective layer 4 covers the self-healing adhesive layer 3, and the surface of the release protective layer 4 is coated with an antistatic coating.

[0032] For further details, please refer to Figure 2 In this embodiment of the present invention, the micro-protrusion 13 is hemispherical with a height of 10 μm. The spacing between adjacent micro-protrusions 13 is 1.5 times the height of the micro-protrusion 13. A wave-shaped interface is formed between the base film 11 and the high-reflection film 12 with a wave undulation depth of 5 μm. The micro-protrusion 13 + wave interface design of the light blocking layer 1 enhances the light-shielding property through the synergistic effect of light path reflection and scattering, replacing the single reflection mechanism of traditional metal foil.

[0033] For further details, please refer to Figure 3 In this embodiment of the present invention, the micropores 22 have a porosity of 30% and a pore size of 5μm. The pores are distributed in a gradient. The pore size near the light-blocking layer 1 is larger than that near the self-healing adhesive layer 3. The amount of hydrophobic particles 23 is 15% of the volume of the micropores 22. The particle size is 1μm. The larger pore size allows water vapor to pass through, but liquid water is blocked outside the small pore size due to surface tension, thus achieving a balance between waterproof and breathable.

[0034] For further details, please refer to Figure 4 In this embodiment of the present invention, the high-viscosity colloid 31 has a thickness of 0.1 mm and a radial groove structure on its surface. The groove depth is 20% of the colloid thickness. The elastic colloid 32 has a honeycomb porous structure with a pore wall thickness of 10 μm and a pore diameter of 50 μm. The upper high-viscosity colloid 31 is embedded in the honeycomb pore wall of the lower elastic colloid 32 in a dendritic structure to form a reinforced structure similar to "reinforced concrete". The upper high-viscosity colloid 31 provides high adhesion, the lower elastic colloid 32 absorbs deformation stress, and the interpenetrating network prevents interlayer delamination.

[0035] For further details, please refer to Figure 1 In this embodiment of the invention, the antistatic coating is composed of conductive carbon fiber and a polymer matrix. The carbon fiber is 0.5 mm long and accounts for 3% of the mass. The release liner 4 has a 1 mm wide uncoated area at its edge to assist in peeling. Short-cut carbon fibers are incorporated into the antistatic coating, and the fibers are randomly oriented to form a three-dimensional conductive network. The carbon fiber network reduces the surface resistance to 10 ohms. 6 Ω, static charge is conducted away through the fibers, and no static electricity attracts dust during peeling, keeping the adhesive layer clean.

[0036] For further details, please refer to Figure 1In this embodiment of the present invention, the light-blocking layer 1 and the waterproof layer 2 are connected by a sawtooth-shaped boundary interlocking connection with an interlocking depth of 10% of the total thickness, and the contact surface between the self-healing adhesive layer 3 and the waterproof layer 2 is wavy.

[0037] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A waterproof light shielding tape, characterized by: From bottom to top, it is provided with a light-blocking layer (1), a waterproof layer (2), a self-healing adhesive layer (3), and a release protective layer (4), wherein: The light-blocking layer (1) is composed of a base film (11) and a high-reflection film (12), and the surface of the high-reflection film (12) is distributed with regularly arranged micro-protrusions (13). The waterproof layer (2) includes a foam material layer (21), on which micropores (22) are densely distributed, and hydrophobic particles (23) are evenly distributed in the micropores (22) to form a breathable and waterproof barrier. The self-healing adhesive layer (3) is composed of a high-viscosity colloid (31) and an elastic colloid (32), and an interpenetrating network structure is provided at the interface of the two colloids; The release protective layer (4) covers the self-healing adhesive layer (3), and the surface of the release protective layer (4) is coated with an antistatic coating.

2. The waterproof light-shielding tape according to claim 1, wherein: The micro-protrusions (13) are either hemispherical or pyramidal in shape, with a height of 10-50 μm. The spacing between adjacent micro-protrusions (13) is 1.5-3 times the height of the micro-protrusions (13). A wavy interface is formed between the base film (11) and the high-reflection film (12), with a wave undulation depth of 5-20 μm.

3. The waterproof light-shielding tape according to claim 1, wherein: The micropores (22) have a porosity of 30%-50% and a pore size of 5-20μm. The pores are distributed in a gradient. The pore size near the light-blocking layer (1) is larger than that near the self-healing adhesive layer (3). The hydrophobic particles (23) fill 15%-30% of the volume of the micropores (22) and have a particle size of 1-10μm.

4. The waterproof light-shielding tape according to claim 1, wherein: The high-viscosity colloid (31) has a thickness of 0.1-0.3 mm and a radial groove structure on its surface. The groove depth is 20%-40% of the colloid thickness. The elastic colloid (32) has a honeycomb porous structure with a pore wall thickness of 10-30 μm and a pore diameter of 50-200 μm.

5. The waterproof light-shielding tape according to claim 1, wherein: The light-blocking layer (1) and the waterproof layer (2) are connected by a sawtooth-shaped boundary interlocking, with an interlocking depth of 10%-15% of the total thickness. The contact surface between the self-healing adhesive layer (3) and the waterproof layer (2) is either a wave-shaped or a grid-shaped concave-convex structure.

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